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प्रश्न
Identify the following substance:
An alkaline gas A which gives dense white fumes with hydrogen chloride.
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उत्तर
Ammonia gas
संबंधित प्रश्न
The atomicities of ozone, sulphur, phosphorus and argon are respectively :
Name the elements water is made of. What are the valencies of these elements ? Work out the chemical
formula for water.
An element Y has a valency of 4. Write the formula for its :
- chloride
- oxide
- sulphate
- carbonate
- nitrate
Write chemical formula of the sulphate of Aluminium, Ammonium and Zinc.
Name the element in the compound and give the formula of the following compound:
Nitric acid
Name the element in the compound and give the formula of the following compound:
Acetic acid
Write the formula of the following compound:
Potassium hydroxide
Write the formula of the following compound:
Potassium iodide
Write the formula of the following compound:
Potassium bisulphite
Write the formula of the following compound:
Sodium hydroxide
Write the formula of the following compound:
Magnesium bicarbonate
Write the formula of the following compound:
Zinc chloride
Write the formula of the following compound:
Zinc hydroxide
Write the formula of the following compound:
Aluminium sulphate
Write the formula of the following compound:
Copper [II] sulphate
Write the formula of the following compound:
Lead [II] hydroxide
State of the following formula of a compound is incorrect. Incorrectly write the correct formula.
KCr2O7
Which of the following represents a correct chemical formula? Name it.
BiPO4
Write the molecular formulae for the following compounds
Magnesium (II) acetate
Play a game for writing formula.
Example 1: Make placards with symbols and valencies of the elements separately. Each student should hold two placards, one with the symbol in the right hand and the other with the valency in the left hand. Keeping the symbols in place, students should criss-cross their valencies to form the formula of a compound.
